#include <stdio.h>
int main ()
{
	int i,j;
	unsigned long s=0;
	unsigned long t;
	
	for (i=1;i<=10;i++)
	{
		
		for (j=1;j<=i;j++)
		    t=i*j;
		
		s=s+(1/t);
	}
	printf("s=%lu\n",s);
	return 0;
 } 
